452 



HaWs Astronomical Observations. 



iron, it may be safely admitted that, for the most part, the discrepancies which 

 will be fonud noted in the folio R-iug i)ages are to be credited to the irregularities 

 in terrestrial magnetism. 



Notwithstanding many and frequently recurring difficulties, Hall evidently- 

 lost no opportunities of securing observations for determining position as accu- 

 rately as i)ossible. The observations which follow have been computed from his 

 journal entries, principally for use in constructing the maps which, with his notes 

 and other data, supplement his surveying work. The computations have not been 

 made with the precision demanded for observations unafl'ected by such large con- 

 stant errors; yet the reduced observations furnish data for determining the lati- 

 tudes of places in the Arctic Zone but little known, and, in some cases, entirely 

 unknown previously to Hall's visits. 



ASTRONOMICAL OBSERVATIONS MADE DURING THE YEARS l«G4-'69. 

 [Reduced under the superintendence of Mr. K. W. D. Bryan, late of the Polaris Expedition ] 



July 29, 1864. — Entrance to Hidson'b Straits. 



ni. s. 

 51 



05 30 

 10 30 



14 

 19 

 21 



47 



7 



17 30 

 20 



20 

 39 



18 30 



24 45 



25 35 



26 30 



31 30 



32 40 



33 40 



100 30 



20 



99 50 



40 



30 



0- 



Elevation 20 feet. 



Lat. 6P 5'. 9 X. 



O to right to Cape Resolu- 

 tion. 



Vessel on course WNW. 

 true, 3 knots per hour. 



Chrou. slow 4'' 57" 



Lat. 61° 8' N. 

 LoDK. 64° 7' W. 



U) right to Cape Resolution. 



July 31, 1864.-=-HuusoN'6 Straits— Continued. 



ni. 8. 

 23 30 

 28 

 34 

 40 



43 3 



47 35 



48 50 



49 .5 



92 35 

 37 

 37 

 34 



69 15 



68 20 



68 5 



67 5'J 



65 45 



30 



15 



04 30 



15 







2Q. 



Small sextant. 



Lat. 01° 32'.9 N. 



2Q. 



At 9" chron. glow on ship's 

 chron. S"" 25°'. 



Lon;;. 66° 51'. 7 W. 



August 3, 1864.— Hudson's Straits. 



m. s. 



21 



29 



31 



33 30 



37 



42 16 

 42 39 



July 31, 1864.— Hudson's Straits. 



14 feet elevation. 



Lat. 01° 31'.3 N. 



12 feet elevation. 



Chron. slow on (i. M. T. l" 31' 



Long. 67° 6'.9 W. 



37 

 38 

 39 

 40 

 38 

 32 

 30 



30 



2Q. 



Artilicial horizon. Large sex- 

 tant. 



Chron. slow on ship's chron. 

 5''21'°; sliip's chruu. fast on 

 G. M. T. 2'.0. 



August 5, 1864.— Hudson's Straits. 



3J 



20 feet elevation. 



Lat. 61° 42'.C N. 



